[deliverable/linux.git] / drivers / gpu / drm / radeon / radeon_irq_kms.c

/*
 * Copyright 2008 Advanced Micro Devices, Inc.
 * Copyright 2008 Red Hat Inc.
 * Copyright 2009 Jerome Glisse.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Dave Airlie
 *          Alex Deucher
 *          Jerome Glisse
 */
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/radeon_drm.h>
#include "radeon_reg.h"
#include "radeon.h"
#include "atom.h"

#define RADEON_WAIT_IDLE_TIMEOUT 200

/**
 * radeon_driver_irq_handler_kms - irq handler for KMS
 *
 * @DRM_IRQ_ARGS: args
 *
 * This is the irq handler for the radeon KMS driver (all asics).
 * radeon_irq_process is a macro that points to the per-asic
 * irq handler callback.
 */
irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
{
	struct drm_device *dev = (struct drm_device *) arg;
	struct radeon_device *rdev = dev->dev_private;

	return radeon_irq_process(rdev);
}

/*
 * Handle hotplug events outside the interrupt handler proper.
 */
/**
 * radeon_hotplug_work_func - display hotplug work handler
 *
 * @work: work struct
 *
 * This is the hot plug event work handler (all asics).
 * The work gets scheduled from the irq handler if there
 * was a hot plug interrupt.  It walks the connector table
 * and calls the hotplug handler for each one, then sends
 * a drm hotplug event to alert userspace.
 */
static void radeon_hotplug_work_func(struct work_struct *work)
{
	struct radeon_device *rdev = container_of(work, struct radeon_device,
						  hotplug_work);
	struct drm_device *dev = rdev->ddev;
	struct drm_mode_config *mode_config = &dev->mode_config;
	struct drm_connector *connector;

	if (mode_config->num_connector) {
		list_for_each_entry(connector, &mode_config->connector_list, head)
			radeon_connector_hotplug(connector);
	}
	/* Just fire off a uevent and let userspace tell us what to do */
	drm_helper_hpd_irq_event(dev);
}

/**
 * radeon_irq_reset_work_func - execute gpu reset
 *
 * @work: work struct
 *
 * Execute scheduled gpu reset (cayman+).
 * This function is called when the irq handler
 * thinks we need a gpu reset.
 */
static void radeon_irq_reset_work_func(struct work_struct *work)
{
	struct radeon_device *rdev = container_of(work, struct radeon_device,
						  reset_work);

	radeon_gpu_reset(rdev);
}

/**
 * radeon_driver_irq_preinstall_kms - drm irq preinstall callback
 *
 * @dev: drm dev pointer
 *
 * Gets the hw ready to enable irqs (all asics).
 * This function disables all interrupt sources on the GPU.
 */
void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
{
	struct radeon_device *rdev = dev->dev_private;
	unsigned long irqflags;
	unsigned i;

	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	/* Disable *all* interrupts */
	for (i = 0; i < RADEON_NUM_RINGS; i++)
		atomic_set(&rdev->irq.ring_int[i], 0);
	rdev->irq.dpm_thermal = false;
	for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
		rdev->irq.hpd[i] = false;
	for (i = 0; i < RADEON_MAX_CRTCS; i++) {
		rdev->irq.crtc_vblank_int[i] = false;
		atomic_set(&rdev->irq.pflip[i], 0);
		rdev->irq.afmt[i] = false;
	}
	radeon_irq_set(rdev);
	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	/* Clear bits */
	radeon_irq_process(rdev);
}

/**
 * radeon_driver_irq_postinstall_kms - drm irq preinstall callback
 *
 * @dev: drm dev pointer
 *
 * Handles stuff to be done after enabling irqs (all asics).
 * Returns 0 on success.
 */
int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
{
	dev->max_vblank_count = 0x001fffff;
	return 0;
}

/**
 * radeon_driver_irq_uninstall_kms - drm irq uninstall callback
 *
 * @dev: drm dev pointer
 *
 * This function disables all interrupt sources on the GPU (all asics).
 */
void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
{
	struct radeon_device *rdev = dev->dev_private;
	unsigned long irqflags;
	unsigned i;

	if (rdev == NULL) {
		return;
	}
	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	/* Disable *all* interrupts */
	for (i = 0; i < RADEON_NUM_RINGS; i++)
		atomic_set(&rdev->irq.ring_int[i], 0);
	rdev->irq.dpm_thermal = false;
	for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
		rdev->irq.hpd[i] = false;
	for (i = 0; i < RADEON_MAX_CRTCS; i++) {
		rdev->irq.crtc_vblank_int[i] = false;
		atomic_set(&rdev->irq.pflip[i], 0);
		rdev->irq.afmt[i] = false;
	}
	radeon_irq_set(rdev);
	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}

/**
 * radeon_msi_ok - asic specific msi checks
 *
 * @rdev: radeon device pointer
 *
 * Handles asic specific MSI checks to determine if
 * MSIs should be enabled on a particular chip (all asics).
 * Returns true if MSIs should be enabled, false if MSIs
 * should not be enabled.
 */
static bool radeon_msi_ok(struct radeon_device *rdev)
{
	/* RV370/RV380 was first asic with MSI support */
	if (rdev->family < CHIP_RV380)
		return false;

	/* MSIs don't work on AGP */
	if (rdev->flags & RADEON_IS_AGP)
		return false;

	/* force MSI on */
	if (radeon_msi == 1)
		return true;
	else if (radeon_msi == 0)
		return false;

	/* Quirks */
	/* HP RS690 only seems to work with MSIs. */
	if ((rdev->pdev->device == 0x791f) &&
	    (rdev->pdev->subsystem_vendor == 0x103c) &&
	    (rdev->pdev->subsystem_device == 0x30c2))
		return true;

	/* Dell RS690 only seems to work with MSIs. */
	if ((rdev->pdev->device == 0x791f) &&
	    (rdev->pdev->subsystem_vendor == 0x1028) &&
	    (rdev->pdev->subsystem_device == 0x01fc))
		return true;

	/* Dell RS690 only seems to work with MSIs. */
	if ((rdev->pdev->device == 0x791f) &&
	    (rdev->pdev->subsystem_vendor == 0x1028) &&
	    (rdev->pdev->subsystem_device == 0x01fd))
		return true;

	/* Gateway RS690 only seems to work with MSIs. */
	if ((rdev->pdev->device == 0x791f) &&
	    (rdev->pdev->subsystem_vendor == 0x107b) &&
	    (rdev->pdev->subsystem_device == 0x0185))
		return true;

	/* try and enable MSIs by default on all RS690s */
	if (rdev->family == CHIP_RS690)
		return true;

	/* RV515 seems to have MSI issues where it loses
	 * MSI rearms occasionally. This leads to lockups and freezes.
	 * disable it by default.
	 */
	if (rdev->family == CHIP_RV515)
		return false;
	if (rdev->flags & RADEON_IS_IGP) {
		/* APUs work fine with MSIs */
		if (rdev->family >= CHIP_PALM)
			return true;
		/* lots of IGPs have problems with MSIs */
		return false;
	}

	return true;
}

/**
 * radeon_irq_kms_init - init driver interrupt info
 *
 * @rdev: radeon device pointer
 *
 * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics).
 * Returns 0 for success, error for failure.
 */
int radeon_irq_kms_init(struct radeon_device *rdev)
{
	int r = 0;

	spin_lock_init(&rdev->irq.lock);
	r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
	if (r) {
		return r;
	}
	/* enable msi */
	rdev->msi_enabled = 0;

	if (radeon_msi_ok(rdev)) {
		int ret = pci_enable_msi(rdev->pdev);
		if (!ret) {
			rdev->msi_enabled = 1;
			dev_info(rdev->dev, "radeon: using MSI.\n");
		}
	}
	rdev->irq.installed = true;
	r = drm_irq_install(rdev->ddev);
	if (r) {
		rdev->irq.installed = false;
		return r;
	}

	INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
	INIT_WORK(&rdev->audio_work, r600_audio_update_hdmi);
	INIT_WORK(&rdev->reset_work, radeon_irq_reset_work_func);

	DRM_INFO("radeon: irq initialized.\n");
	return 0;
}

/**
 * radeon_irq_kms_fini - tear down driver interrupt info
 *
 * @rdev: radeon device pointer
 *
 * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics).
 */
void radeon_irq_kms_fini(struct radeon_device *rdev)
{
	drm_vblank_cleanup(rdev->ddev);
	if (rdev->irq.installed) {
		drm_irq_uninstall(rdev->ddev);
		rdev->irq.installed = false;
		if (rdev->msi_enabled)
			pci_disable_msi(rdev->pdev);
		flush_work(&rdev->hotplug_work);
	}
}

/**
 * radeon_irq_kms_sw_irq_get - enable software interrupt
 *
 * @rdev: radeon device pointer
 * @ring: ring whose interrupt you want to enable
 *
 * Enables the software interrupt for a specific ring (all asics).
 * The software interrupt is generally used to signal a fence on
 * a particular ring.
 */
void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring)
{
	unsigned long irqflags;

	if (!rdev->ddev->irq_enabled)
		return;

	if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) {
		spin_lock_irqsave(&rdev->irq.lock, irqflags);
		radeon_irq_set(rdev);
		spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	}
}

/**
 * radeon_irq_kms_sw_irq_put - disable software interrupt
 *
 * @rdev: radeon device pointer
 * @ring: ring whose interrupt you want to disable
 *
 * Disables the software interrupt for a specific ring (all asics).
 * The software interrupt is generally used to signal a fence on
 * a particular ring.
 */
void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring)
{
	unsigned long irqflags;

	if (!rdev->ddev->irq_enabled)
		return;

	if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) {
		spin_lock_irqsave(&rdev->irq.lock, irqflags);
		radeon_irq_set(rdev);
		spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	}
}

/**
 * radeon_irq_kms_pflip_irq_get - enable pageflip interrupt
 *
 * @rdev: radeon device pointer
 * @crtc: crtc whose interrupt you want to enable
 *
 * Enables the pageflip interrupt for a specific crtc (all asics).
 * For pageflips we use the vblank interrupt source.
 */
void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
{
	unsigned long irqflags;

	if (crtc < 0 || crtc >= rdev->num_crtc)
		return;

	if (!rdev->ddev->irq_enabled)
		return;

	if (atomic_inc_return(&rdev->irq.pflip[crtc]) == 1) {
		spin_lock_irqsave(&rdev->irq.lock, irqflags);
		radeon_irq_set(rdev);
		spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	}
}

/**
 * radeon_irq_kms_pflip_irq_put - disable pageflip interrupt
 *
 * @rdev: radeon device pointer
 * @crtc: crtc whose interrupt you want to disable
 *
 * Disables the pageflip interrupt for a specific crtc (all asics).
 * For pageflips we use the vblank interrupt source.
 */
void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
{
	unsigned long irqflags;

	if (crtc < 0 || crtc >= rdev->num_crtc)
		return;

	if (!rdev->ddev->irq_enabled)
		return;

	if (atomic_dec_and_test(&rdev->irq.pflip[crtc])) {
		spin_lock_irqsave(&rdev->irq.lock, irqflags);
		radeon_irq_set(rdev);
		spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	}
}

/**
 * radeon_irq_kms_enable_afmt - enable audio format change interrupt
 *
 * @rdev: radeon device pointer
 * @block: afmt block whose interrupt you want to enable
 *
 * Enables the afmt change interrupt for a specific afmt block (all asics).
 */
void radeon_irq_kms_enable_afmt(struct radeon_device *rdev, int block)
{
	unsigned long irqflags;

	if (!rdev->ddev->irq_enabled)
		return;

	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	rdev->irq.afmt[block] = true;
	radeon_irq_set(rdev);
	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);

}

/**
 * radeon_irq_kms_disable_afmt - disable audio format change interrupt
 *
 * @rdev: radeon device pointer
 * @block: afmt block whose interrupt you want to disable
 *
 * Disables the afmt change interrupt for a specific afmt block (all asics).
 */
void radeon_irq_kms_disable_afmt(struct radeon_device *rdev, int block)
{
	unsigned long irqflags;

	if (!rdev->ddev->irq_enabled)
		return;

	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	rdev->irq.afmt[block] = false;
	radeon_irq_set(rdev);
	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}

/**
 * radeon_irq_kms_enable_hpd - enable hotplug detect interrupt
 *
 * @rdev: radeon device pointer
 * @hpd_mask: mask of hpd pins you want to enable.
 *
 * Enables the hotplug detect interrupt for a specific hpd pin (all asics).
 */
void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
{
	unsigned long irqflags;
	int i;

	if (!rdev->ddev->irq_enabled)
		return;

	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
		rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i));
	radeon_irq_set(rdev);
	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}

/**
 * radeon_irq_kms_disable_hpd - disable hotplug detect interrupt
 *
 * @rdev: radeon device pointer
 * @hpd_mask: mask of hpd pins you want to disable.
 *
 * Disables the hotplug detect interrupt for a specific hpd pin (all asics).
 */
void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
{
	unsigned long irqflags;
	int i;

	if (!rdev->ddev->irq_enabled)
		return;

	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
		rdev->irq.hpd[i] &= !(hpd_mask & (1 << i));
	radeon_irq_set(rdev);
	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}
Commit	Line	Data
771fe6b9 JG	1	/*
	2	* Copyright 2008 Advanced Micro Devices, Inc.
	3	* Copyright 2008 Red Hat Inc.
	4	* Copyright 2009 Jerome Glisse.
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a
	7	* copy of this software and associated documentation files (the "Software"),
	8	* to deal in the Software without restriction, including without limitation
	9	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	10	* and/or sell copies of the Software, and to permit persons to whom the
	11	* Software is furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	20	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	21	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	22	* OTHER DEALINGS IN THE SOFTWARE.
	23	*
	24	* Authors: Dave Airlie
	25	* Alex Deucher
	26	* Jerome Glisse
	27	*/
760285e7 DH	28	#include <drm/drmP.h>
	29	#include <drm/drm_crtc_helper.h>
	30	#include <drm/radeon_drm.h>
771fe6b9	31	#include "radeon_reg.h"
771fe6b9 JG	32	#include "radeon.h"
	33	#include "atom.h"
	34
fb98257a CK	35	#define RADEON_WAIT_IDLE_TIMEOUT 200
fb98257a CK	36
b73ba98d AD	37	/**
	38	* radeon_driver_irq_handler_kms - irq handler for KMS
	39	*
	40	* @DRM_IRQ_ARGS: args
	41	*
	42	* This is the irq handler for the radeon KMS driver (all asics).
	43	* radeon_irq_process is a macro that points to the per-asic
	44	* irq handler callback.
	45	*/
771fe6b9 JG	46	irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
	47	{
	48	struct drm_device dev = (struct drm_device ) arg;
	49	struct radeon_device *rdev = dev->dev_private;
	50
	51	return radeon_irq_process(rdev);
	52	}
	53
d4877cf2 AD	54	/*
	55	* Handle hotplug events outside the interrupt handler proper.
	56	*/
b73ba98d AD	57	/**
	58	* radeon_hotplug_work_func - display hotplug work handler
	59	*
	60	* @work: work struct
	61	*
	62	* This is the hot plug event work handler (all asics).
	63	* The work gets scheduled from the irq handler if there
	64	* was a hot plug interrupt. It walks the connector table
	65	* and calls the hotplug handler for each one, then sends
	66	* a drm hotplug event to alert userspace.
	67	*/
d4877cf2 AD	68	static void radeon_hotplug_work_func(struct work_struct *work)
	69	{
	70	struct radeon_device *rdev = container_of(work, struct radeon_device,
	71	hotplug_work);
	72	struct drm_device *dev = rdev->ddev;
	73	struct drm_mode_config *mode_config = &dev->mode_config;
	74	struct drm_connector *connector;
	75
	76	if (mode_config->num_connector) {
	77	list_for_each_entry(connector, &mode_config->connector_list, head)
	78	radeon_connector_hotplug(connector);
	79	}
	80	/* Just fire off a uevent and let userspace tell us what to do */
eb1f8e4f	81	drm_helper_hpd_irq_event(dev);
d4877cf2 AD	82	}
d4877cf2 AD	83
8f61b34c AD	84	/**
	85	* radeon_irq_reset_work_func - execute gpu reset
	86	*
	87	* @work: work struct
	88	*
	89	* Execute scheduled gpu reset (cayman+).
	90	* This function is called when the irq handler
	91	* thinks we need a gpu reset.
	92	*/
	93	static void radeon_irq_reset_work_func(struct work_struct *work)
	94	{
	95	struct radeon_device *rdev = container_of(work, struct radeon_device,
	96	reset_work);
	97
	98	radeon_gpu_reset(rdev);
	99	}
	100
b73ba98d AD	101	/**
	102	* radeon_driver_irq_preinstall_kms - drm irq preinstall callback
	103	*
	104	* @dev: drm dev pointer
	105	*
	106	* Gets the hw ready to enable irqs (all asics).
	107	* This function disables all interrupt sources on the GPU.
	108	*/
771fe6b9 JG	109	void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
	110	{
	111	struct radeon_device *rdev = dev->dev_private;
fb98257a	112	unsigned long irqflags;
771fe6b9 JG	113	unsigned i;
771fe6b9 JG	114
fb98257a	115	spin_lock_irqsave(&rdev->irq.lock, irqflags);
771fe6b9	116	/* Disable all interrupts */
1b37078b	117	for (i = 0; i < RADEON_NUM_RINGS; i++)
736fc37f	118	atomic_set(&rdev->irq.ring_int[i], 0);
4a6369e9	119	rdev->irq.dpm_thermal = false;
54bd5206	120	for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
9e7b414e	121	rdev->irq.hpd[i] = false;
54bd5206 IH	122	for (i = 0; i < RADEON_MAX_CRTCS; i++) {
54bd5206 IH	123	rdev->irq.crtc_vblank_int[i] = false;
736fc37f	124	atomic_set(&rdev->irq.pflip[i], 0);
f122c610	125	rdev->irq.afmt[i] = false;
6f34be50	126	}
771fe6b9	127	radeon_irq_set(rdev);
fb98257a	128	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
771fe6b9 JG	129	/* Clear bits */
	130	radeon_irq_process(rdev);
	131	}
	132
b73ba98d AD	133	/**
	134	* radeon_driver_irq_postinstall_kms - drm irq preinstall callback
	135	*
	136	* @dev: drm dev pointer
	137	*
	138	* Handles stuff to be done after enabling irqs (all asics).
	139	* Returns 0 on success.
	140	*/
771fe6b9 JG	141	int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
771fe6b9 JG	142	{
771fe6b9	143	dev->max_vblank_count = 0x001fffff;
771fe6b9 JG	144	return 0;
	145	}
	146
b73ba98d AD	147	/**
	148	* radeon_driver_irq_uninstall_kms - drm irq uninstall callback
	149	*
	150	* @dev: drm dev pointer
	151	*
	152	* This function disables all interrupt sources on the GPU (all asics).
	153	*/
771fe6b9 JG	154	void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
	155	{
	156	struct radeon_device *rdev = dev->dev_private;
fb98257a	157	unsigned long irqflags;
771fe6b9 JG	158	unsigned i;
	159
	160	if (rdev == NULL) {
	161	return;
	162	}
fb98257a	163	spin_lock_irqsave(&rdev->irq.lock, irqflags);
771fe6b9	164	/* Disable all interrupts */
1b37078b	165	for (i = 0; i < RADEON_NUM_RINGS; i++)
736fc37f	166	atomic_set(&rdev->irq.ring_int[i], 0);
4a6369e9	167	rdev->irq.dpm_thermal = false;
54bd5206	168	for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
003e69f9	169	rdev->irq.hpd[i] = false;
54bd5206 IH	170	for (i = 0; i < RADEON_MAX_CRTCS; i++) {
54bd5206 IH	171	rdev->irq.crtc_vblank_int[i] = false;
736fc37f	172	atomic_set(&rdev->irq.pflip[i], 0);
f122c610	173	rdev->irq.afmt[i] = false;
6f34be50	174	}
771fe6b9	175	radeon_irq_set(rdev);
fb98257a	176	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
771fe6b9 JG	177	}
771fe6b9 JG	178
b73ba98d AD	179	/**
	180	* radeon_msi_ok - asic specific msi checks
	181	*
	182	* @rdev: radeon device pointer
	183	*
	184	* Handles asic specific MSI checks to determine if
	185	* MSIs should be enabled on a particular chip (all asics).
	186	* Returns true if MSIs should be enabled, false if MSIs
	187	* should not be enabled.
	188	*/
8f6c25c5 AD	189	static bool radeon_msi_ok(struct radeon_device *rdev)
	190	{
	191	/* RV370/RV380 was first asic with MSI support */
	192	if (rdev->family < CHIP_RV380)
	193	return false;
	194
	195	/* MSIs don't work on AGP */
	196	if (rdev->flags & RADEON_IS_AGP)
	197	return false;
	198
a18cee15 AD	199	/* force MSI on */
	200	if (radeon_msi == 1)
	201	return true;
	202	else if (radeon_msi == 0)
	203	return false;
	204
b362105f AD	205	/* Quirks */
	206	/* HP RS690 only seems to work with MSIs. */
	207	if ((rdev->pdev->device == 0x791f) &&
	208	(rdev->pdev->subsystem_vendor == 0x103c) &&
	209	(rdev->pdev->subsystem_device == 0x30c2))
	210	return true;
	211
44517c44 AD	212	/* Dell RS690 only seems to work with MSIs. */
	213	if ((rdev->pdev->device == 0x791f) &&
	214	(rdev->pdev->subsystem_vendor == 0x1028) &&
	215	(rdev->pdev->subsystem_device == 0x01fc))
	216	return true;
	217
01e718ec AD	218	/* Dell RS690 only seems to work with MSIs. */
	219	if ((rdev->pdev->device == 0x791f) &&
	220	(rdev->pdev->subsystem_vendor == 0x1028) &&
	221	(rdev->pdev->subsystem_device == 0x01fd))
	222	return true;
	223
3a6d59df AD	224	/* Gateway RS690 only seems to work with MSIs. */
	225	if ((rdev->pdev->device == 0x791f) &&
	226	(rdev->pdev->subsystem_vendor == 0x107b) &&
	227	(rdev->pdev->subsystem_device == 0x0185))
	228	return true;
	229
fb6ca6d1 AD	230	/* try and enable MSIs by default on all RS690s */
	231	if (rdev->family == CHIP_RS690)
	232	return true;
	233
16a5e32b DA	234	/* RV515 seems to have MSI issues where it loses
	235	* MSI rearms occasionally. This leads to lockups and freezes.
	236	* disable it by default.
	237	*/
	238	if (rdev->family == CHIP_RV515)
	239	return false;
8f6c25c5 AD	240	if (rdev->flags & RADEON_IS_IGP) {
	241	/* APUs work fine with MSIs */
	242	if (rdev->family >= CHIP_PALM)
	243	return true;
	244	/* lots of IGPs have problems with MSIs */
	245	return false;
	246	}
	247
	248	return true;
	249	}
	250
b73ba98d AD	251	/**
	252	* radeon_irq_kms_init - init driver interrupt info
	253	*
	254	* @rdev: radeon device pointer
	255	*
	256	* Sets up the work irq handlers, vblank init, MSIs, etc. (all asics).
	257	* Returns 0 for success, error for failure.
	258	*/
771fe6b9 JG	259	int radeon_irq_kms_init(struct radeon_device *rdev)
	260	{
	261	int r = 0;
	262
fb98257a	263	spin_lock_init(&rdev->irq.lock);
9e7b414e	264	r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
771fe6b9 JG	265	if (r) {
	266	return r;
	267	}
3e5cb98d AD	268	/* enable msi */
3e5cb98d AD	269	rdev->msi_enabled = 0;
8f6c25c5 AD	270
8f6c25c5 AD	271	if (radeon_msi_ok(rdev)) {
3e5cb98d	272	int ret = pci_enable_msi(rdev->pdev);
d8f60cfc	273	if (!ret) {
3e5cb98d	274	rdev->msi_enabled = 1;
da7be684	275	dev_info(rdev->dev, "radeon: using MSI.\n");
d8f60cfc	276	}
3e5cb98d	277	}
771fe6b9	278	rdev->irq.installed = true;
003e69f9 JG	279	r = drm_irq_install(rdev->ddev);
	280	if (r) {
	281	rdev->irq.installed = false;
	282	return r;
	283	}
a01c34f7 SS	284
	285	INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
	286	INIT_WORK(&rdev->audio_work, r600_audio_update_hdmi);
	287	INIT_WORK(&rdev->reset_work, radeon_irq_reset_work_func);
	288
771fe6b9 JG	289	DRM_INFO("radeon: irq initialized.\n");
	290	return 0;
	291	}
	292
b73ba98d	293	/**
cf2fbdd2	294	* radeon_irq_kms_fini - tear down driver interrupt info
b73ba98d AD	295	*
	296	* @rdev: radeon device pointer
	297	*
	298	* Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics).
	299	*/
771fe6b9 JG	300	void radeon_irq_kms_fini(struct radeon_device *rdev)
771fe6b9 JG	301	{
003e69f9	302	drm_vblank_cleanup(rdev->ddev);
771fe6b9	303	if (rdev->irq.installed) {
771fe6b9	304	drm_irq_uninstall(rdev->ddev);
003e69f9	305	rdev->irq.installed = false;
3e5cb98d AD	306	if (rdev->msi_enabled)
3e5cb98d AD	307	pci_disable_msi(rdev->pdev);
a01c34f7	308	flush_work(&rdev->hotplug_work);
771fe6b9 JG	309	}
771fe6b9 JG	310	}
1614f8b1	311
b73ba98d AD	312	/**
	313	* radeon_irq_kms_sw_irq_get - enable software interrupt
	314	*
	315	* @rdev: radeon device pointer
	316	* @ring: ring whose interrupt you want to enable
	317	*
	318	* Enables the software interrupt for a specific ring (all asics).
	319	* The software interrupt is generally used to signal a fence on
	320	* a particular ring.
	321	*/
1b37078b	322	void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring)
1614f8b1 DA	323	{
	324	unsigned long irqflags;
	325
736fc37f CK	326	if (!rdev->ddev->irq_enabled)
	327	return;
	328
	329	if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) {
	330	spin_lock_irqsave(&rdev->irq.lock, irqflags);
1614f8b1	331	radeon_irq_set(rdev);
736fc37f	332	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
1614f8b1	333	}
1614f8b1 DA	334	}
1614f8b1 DA	335
b73ba98d AD	336	/**
	337	* radeon_irq_kms_sw_irq_put - disable software interrupt
	338	*
	339	* @rdev: radeon device pointer
	340	* @ring: ring whose interrupt you want to disable
	341	*
	342	* Disables the software interrupt for a specific ring (all asics).
	343	* The software interrupt is generally used to signal a fence on
	344	* a particular ring.
	345	*/
1b37078b	346	void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring)
1614f8b1 DA	347	{
	348	unsigned long irqflags;
	349
736fc37f CK	350	if (!rdev->ddev->irq_enabled)
	351	return;
	352
	353	if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) {
	354	spin_lock_irqsave(&rdev->irq.lock, irqflags);
1614f8b1	355	radeon_irq_set(rdev);
736fc37f	356	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
1614f8b1	357	}
1614f8b1 DA	358	}
1614f8b1 DA	359
b73ba98d AD	360	/**
	361	* radeon_irq_kms_pflip_irq_get - enable pageflip interrupt
	362	*
	363	* @rdev: radeon device pointer
	364	* @crtc: crtc whose interrupt you want to enable
	365	*
	366	* Enables the pageflip interrupt for a specific crtc (all asics).
	367	* For pageflips we use the vblank interrupt source.
	368	*/
6f34be50 AD	369	void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
	370	{
	371	unsigned long irqflags;
	372
	373	if (crtc < 0 \|\| crtc >= rdev->num_crtc)
	374	return;
	375
736fc37f CK	376	if (!rdev->ddev->irq_enabled)
	377	return;
	378
	379	if (atomic_inc_return(&rdev->irq.pflip[crtc]) == 1) {
	380	spin_lock_irqsave(&rdev->irq.lock, irqflags);
6f34be50	381	radeon_irq_set(rdev);
736fc37f	382	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
6f34be50	383	}
6f34be50 AD	384	}
6f34be50 AD	385
b73ba98d AD	386	/**
	387	* radeon_irq_kms_pflip_irq_put - disable pageflip interrupt
	388	*
	389	* @rdev: radeon device pointer
	390	* @crtc: crtc whose interrupt you want to disable
	391	*
	392	* Disables the pageflip interrupt for a specific crtc (all asics).
	393	* For pageflips we use the vblank interrupt source.
	394	*/
6f34be50 AD	395	void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
	396	{
	397	unsigned long irqflags;
	398
	399	if (crtc < 0 \|\| crtc >= rdev->num_crtc)
	400	return;
	401
736fc37f CK	402	if (!rdev->ddev->irq_enabled)
	403	return;
	404
	405	if (atomic_dec_and_test(&rdev->irq.pflip[crtc])) {
	406	spin_lock_irqsave(&rdev->irq.lock, irqflags);
6f34be50	407	radeon_irq_set(rdev);
736fc37f	408	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
6f34be50	409	}
6f34be50 AD	410	}
6f34be50 AD	411
b73ba98d AD	412	/**
	413	* radeon_irq_kms_enable_afmt - enable audio format change interrupt
	414	*
	415	* @rdev: radeon device pointer
	416	* @block: afmt block whose interrupt you want to enable
	417	*
	418	* Enables the afmt change interrupt for a specific afmt block (all asics).
	419	*/
fb98257a CK	420	void radeon_irq_kms_enable_afmt(struct radeon_device *rdev, int block)
	421	{
	422	unsigned long irqflags;
	423
cc9945bf AD	424	if (!rdev->ddev->irq_enabled)
	425	return;
	426
fb98257a CK	427	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	428	rdev->irq.afmt[block] = true;
	429	radeon_irq_set(rdev);
	430	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	431
	432	}
	433
b73ba98d AD	434	/**
	435	* radeon_irq_kms_disable_afmt - disable audio format change interrupt
	436	*
	437	* @rdev: radeon device pointer
	438	* @block: afmt block whose interrupt you want to disable
	439	*
	440	* Disables the afmt change interrupt for a specific afmt block (all asics).
	441	*/
fb98257a CK	442	void radeon_irq_kms_disable_afmt(struct radeon_device *rdev, int block)
	443	{
	444	unsigned long irqflags;
	445
cc9945bf AD	446	if (!rdev->ddev->irq_enabled)
	447	return;
	448
fb98257a CK	449	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	450	rdev->irq.afmt[block] = false;
	451	radeon_irq_set(rdev);
	452	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	453	}
	454
b73ba98d AD	455	/**
	456	* radeon_irq_kms_enable_hpd - enable hotplug detect interrupt
	457	*
	458	* @rdev: radeon device pointer
	459	* @hpd_mask: mask of hpd pins you want to enable.
	460	*
	461	* Enables the hotplug detect interrupt for a specific hpd pin (all asics).
	462	*/
fb98257a CK	463	void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
	464	{
	465	unsigned long irqflags;
	466	int i;
	467
cc9945bf AD	468	if (!rdev->ddev->irq_enabled)
	469	return;
	470
fb98257a CK	471	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	472	for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
	473	rdev->irq.hpd[i] \|= !!(hpd_mask & (1 << i));
	474	radeon_irq_set(rdev);
	475	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	476	}
	477
b73ba98d AD	478	/**
	479	* radeon_irq_kms_disable_hpd - disable hotplug detect interrupt
	480	*
	481	* @rdev: radeon device pointer
	482	* @hpd_mask: mask of hpd pins you want to disable.
	483	*
	484	* Disables the hotplug detect interrupt for a specific hpd pin (all asics).
	485	*/
fb98257a CK	486	void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
	487	{
	488	unsigned long irqflags;
	489	int i;
	490
cc9945bf AD	491	if (!rdev->ddev->irq_enabled)
	492	return;
	493
fb98257a CK	494	spin_lock_irqsave(&rdev->irq.lock, irqflags);
	495	for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
	496	rdev->irq.hpd[i] &= !(hpd_mask & (1 << i));
	497	radeon_irq_set(rdev);
	498	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
	499	}
	500